<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>霓虹灯开关</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <input id="checkbox" type="checkbox" />
    <label class="switch" for="checkbox"></label>
  </body>
</html>
